A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 6620-01-233-4505
NSN 5960-01-382-8772
NSN 5920-01-298-0316
NSN 6645-01-382-4940
NSN 6145-01-452-1966
NSN 6320-01-519-0916
NSN 6145-01-349-8995
NSN 5835-01-531-0379
NSN 5905-01-534-4955
NSN 5950-00-542-8549
NSN 6145-01-023-4532
NSN 6105-00-204-5497